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EM-1: Used on 5+ million acres worldwide.

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Garden Solutions - Ponds
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Garden Solutions - Ponds

 

Treating a pond with Effective Microorganisms® once per month (And, we're usually talking about Activated EM-1®) will keep enough beneficial microbes in the system to keep nutrient levels low enough to improve overall water clarity. Interestingly, EM-1® also has the ability to neutralize salts, such as calcium, and prevent them from crystallizing on surfaces, a great benefit with water fountains using hard water. It will also clean the crystallized salts off the surfaces it comes in contact with.


On average, for a healthy pond or water garden, EM-1® Microbial Inoculant is applied once per month. The rate is 1 part EM-1® for every 10,000 parts water. Allow several weeks to a couple months for the EM-1® to work. Some slime (muck) from the bottom will slowly rise to the surface. Leave it and let nature do its thing as it will disappear shortly.

This chart is a quick reference guide to figure how much EM-1® you may need.

pond-table

Activated EM-1 Rates for Ponds or Aquatic Environments
Higher concentrations are only necessary under extreme conditions where sludge and muck are choking out the pond. When the pond resembles a wastewater lagoon more than a pond, apply at the suggested rates every other week until the water clears. Once the water clears, reduce application rates to once per month for maintenance.

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